Bearing for car journal-boxes.



N0. 663,094. Pamnted;x Bepi 4, |900.

d. M. HUPKINS.

BEARING FOR CAR JOURNAL BUXES.

L (Application filed Sept. 17, 1900.)

(No Model.) 3' SheetsfrSheet l.

HMI

Ill1 nf i William im ,imm

No. 663,094. Patenfd Dec. 4, |900.

J. M. HOPKINS.

BEARING FR CAR JOURNAL BOXES.

"Application led Sept. 1'7` 1900.)

3 Sheets-Sheet 2.

(No Model.)

N0. 063,094. Patented Dec. 4, |000.

Y J. M. H0 PK| Ns.

BEARING FOR GAR. JOURNAL BOXES.

IApplim'zxsimx led Sept. 1'77, 1900.\ (no Modal.) 3 sheets-sheet 3,

/0 f/ M Jy-7 MMM@ NtTnD STATES PATENT Fries.

JAMES M. HOPKINS, OF CHICAGO, ILLINOIS.

BEARINGV FOR CAR JOURNAL-BOXES.

SPECIFICATION forming part of Letters Patent No. 663,094, dated December4. 1900. Application led September 17, 1900. Serial No. 30,352. (Nomodel.)

To all whom it may concer-n:

Be it known that I, JAMES M. HOPKINS, a citizen of the United States,and a resident of Chicago, county of Cook, and State of Illinois, haveinvented certain new and useful Improvements in Bearings for CarJournal- Boxes, of which the following is a specification, and which areillustrated in the accompanying drawings, forming a part thereof.

This invention has for its object to improve upon the construction ofthe brass and wedge or key employed in car journal-boxes; and

'it consists in the construction hereinafter fully described, andillustrated in the accompanying drawings, in which- Figure 1 is acentral vertical section of a journal-box and the brass and key, thecaraxle being shown inA elevation. Fig. 2 is a plan section on the line2 2 of Fig. 1. Fig. 3 is a side elevation of the brass and key asapplied to an axle. Fig. 4 is a transverse section of the brass and key,taken on the line 4 4 of Figs. l and 3, a detail of the journal-boxbeing shown in dotted lines. Fig. 5 is a plan view of the brass. Fig. 6is a bottom plan of the wedge. Fig. 7 is a side elevation of one of themembers of the wedge. Fig.`8 is a detail section on the line 8 8 of Fig.6. Figs. 9 to 12 show a modified form of construction, Fig. 9 being adetail longitudinal central section through the journal-box and thebrass and wedge. on the line 10 10 of Fig. 9. Fig. 11 is a sideelevation of the slidable member, and Fig. 12 is a plan View of thebrass.

The journal-box 10 and the car-axle 11 are of ordinary construction andform no part of the presentinvention. The brass l2 is adapted to itbetween the shoulder 16, formed on the axle, and the iiange 15 at theend thereof when such flange is present. The key or wedge interposedbetween the brass and the parallel plate of the journal-box is composedof an upper member 13 and a lower member 14, the former fitting betweenthe side walls of the box, so as to be incapable of lateral movement.The brass is provided with lateral lugs 17 17, adapted to bear againstthe outer faces of instanding lugs or ribs 1S 18 on the side walls ofthe box 10, so that it is prevented from material backward movement withreference to the box. The front end of Fig. 10 is a transverse sectionthe upper member 13 of the wedge abuts against a depending lug 19 at theforward end of the top plate of the journal-box, and this member isprovided with downwardly-project'ing lugs 20, one at each side, adaptedto bear against the front face of upstanding lugs 21, formed on thebrass 12. It follows, therefore, that the brass aud the upper member ofthe wedge are locked against any material forward movement relatively asto each other or as to the journal-box. The construction describedprovides forthe anchoring, subject to slight play, of the brass to the`axle and the wedge or key to the box and the interlocking of brass andwedge. While it is necessary to thus prevent any material longitudinalmovement of the car-axle with reference to the journal-box, it isequally necessary to provide for the changes of the angular relation ofthese parts in a vertical plane parallel with the axle, due totheswaying of the car or any unevenness of the track, and particularly toprovide for a proper transmission of the weight of the car-body to theaxle, whatever maybe the angular relation of the latter with the box inthis plane. Various expedients have been resorted to for the purpose ofcompensating for this shifting of position. There has been employed,among other devices, a convex disk interposed between the key and thebrass or between two members of the key, but in every instance securedto one of them, so as to be limited to a rotary motion. Inasmuch as arocking motion could not take place in a structure of this kind withouta variationof the distance between the front end ofthe key and therearward end of the brass, while, on therother hand, any such materialvariation is impossible beca-use of thepositive stop-l ugs employed toprevent longitudinal movement of the parts, it is obvious that thisexpedient falls short of success.

In the structure herein shown and described the top of the brass is madefiat and smooth and the lower member 14 of the key is fitted thereto asa saddle, being provided with downwardly-projecting wing-pieces- 22, oneat each side, which engage the inclined side walls of the brass, andthereby prevent any lateral play of the two, while permitting freelongitudinal movement. The upper face of IOO the member 14 islongit`udinall57 convex and the lower face of the upper member 13 of thekey is longitudinally concave with a corresponding curvature. Iftherefore there is a 5 change in the angular relation in vertical planeof the brass and upper member of the key, so as to tend to throw theweight to one end of the member 14, the latter will be movedlongitudinally in the opposite direc- 1o tion by a wedge action, thusallowing the members l2 and 13 to approach each other at the end atwhich there is a preponderance of weight` while interposing between theseparated ends of these members the thicker portion of the intermediatemember ,14, so

that there is at all times a wide distribution of the load. As soon as,the parts 12 and 13 are restored to the parallel relation theintermediate member 14 slides backwardly by zo a shifting of the burdentoward its opposite end, and hence there is an entire absence of unduestraining of the parts.

For the purpose of preventing the two members 13and 14 of the key fromparting com- 2 5 pany when not in use it is desirable to set a rivet 23through one of these members, providing a longitudinal slot in the otherfor it to travel in. As shown, this rivet is Xed Vin the member 14 andthe slot is formed in the 3o member 13, the rivet bein-g provided with ahead to prevent the parts from separating `when out of service. n

' In order to prevent any accidental displacement of the movable member14, stop-lugs are provided to limit its movement with reference to thevmember 13. As shown, such lugs 24 are formed upon the member 13, andrecesses 25 are formed longitudinally in the sides of the member 14 fortheir accommoda- 4o tion, the length of these recesses being sufficientto allow all necessary play of the movable member, while the length ofthe slot in the member 13, which accommodates the rivet H,#23, is suchthat the lugs 24 will prevent the -4*45 rivet from reaching the end of aslot.

The construction hereinbefore described is adapted to the requirementsas to dimensions of the Master Car-Builders Association. Thehereinafter-described modification involves 5o a slight increase of thedistance between the journal-bearing face of the brass and the innersurface of the top of the journal-box in 'order that the parts may notbe weakened. In this form of construction the upper member of the wedge13 is of the same form as in the construction already described; vbutthe lower member of the Wedge, which is here designated at14a`, isdouble convex, the curvature extending longitudinally or, in other 6owords, being. segments of a cylinder. The brass 12a differs from thebrass 12 only in that its upper surface is concave, adapted to thecurved under surface of the lower member of the wedge. e In order thatthe brass may not be weakened, its body is somewhat thickened, and toprevent the member 14` from lateral movement with reference to the brassthe recess of the latter-(shown at 25) is provided with side walls 26.The actionof the device thus constructed is the same as in thatpreviously described.

The construction herein shown and described not only provides for a moreperfect action than any device of this class which has heretofore beenknown, but it is also rmore simple and cheaper than any deviceheretofore used.

I claim as my invention- 1. In a car journal-bearing, in combination, abrass havinga flat uppersurface, and a key comprising an upper memberadapted to receive the bearing-surface of a journalboX and having alongitudinally-concave lower face, and a lower member interposed`between the upper member and the brass and having its contacting facesconforming thereto and being in sliding engagement therewith.

2. In a car journal-bearing, in combination with a brass and a keymember adapted to so interlock and to so engage a journal-box thatneither is capable of material longitudinal movement, an intermediatekey member having aflat bottom face and a longitudinallyconvex top face,the faces of the two firste mentioned members which contact with suchthird member conforming thereto and being in sliding engagementtherewith.

v 3. In a car journal-bearing, the combination with a brass and a keymember, each adapted to be fixed against material longitudinal movement,of a second key member interposed directly between such twofirst-mentioned members and having a longitudinallyconvex face and beingcapable of free longitudinal movement, the meeting faces of the threemembers conforming each to the other.

4. In a car journal-bearing, in combination, a brass and a wedge memberadapted to vary their angular relation in vertical plane, and a slidablemember interposed therebetween, the wedge member being adapted to engagea journal-box to prevent its forward movement, the brass being .adaptedto engage a journal-box to prevent its backward movement, and the wedgeand brass being interengaged to preventthe backward movement of theformer and the forward movement of the latter. Y

5. In a car journal-bearing, in combination, a brass adapted to engagethe walls of a journal-box to limit its backward movement, a wedgememberadapted to engage a journalbox to limit its forward movement, such brassand wedge member interlocking intermediate of their ends to limit theirforward and rearward. movement respectively, but Vte permit them tochange their angular relation longitudinally; and a slidable memberinterposed between the brass and wedge member.

6. In a car journal-bearing, in combination, avbrass; a member slidablethereupon and having pendent lateral flanges, and having its upper facelongitudinally convex 3 and a IOO IIO

Wedge member having its lower face concave complementary to theoonvexface of the slidable member and being adapted to engage the top Wall ofa journal-box.

7. ln a oar journal-bearing, in combination, a brass, a Wedge memberadapted to t Within the top of a journal-box so as to be incapable ofangular movement relatively thereto, and

a slidable member interposed between the brass and Wedge member andengaging both lo to prevent their relative angular movement in ahorizontal plane.

JAMES M. HOPKINS. Witnesses:

S. H. CAMPBELL, LOUIS K. GILLsoN.

